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1. WO2020107670 - METHOD FOR CONCENTRATING IRON BY COMPREHENSIVELY UTILIZING STEELMAKING DUST

Publication Number WO/2020/107670
Publication Date 04.06.2020
International Application No. PCT/CN2019/071272
International Filing Date 11.01.2019
IPC
C22B 19/30 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
19Obtaining zinc or zinc oxide
30from metallic residues or scraps
C22B 19/04 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
19Obtaining zinc or zinc oxide
04Obtaining zinc by distilling
C22B 5/02 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
5General processes of reducing to metals
02Dry processes
C22B 5/10 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
5General processes of reducing to metals
02Dry processes
10by solid carbonaceous reducing agents
C22B 7/02 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
7Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
02Working-up flue dust
C22B 1/248 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
1Preliminary treatment of ores or scrap
14Agglomerating; Briquetting; Binding; Granulating
24Binding; Briquetting
248of metal scrap or alloys
CPC
C22B 1/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
1Preliminary treatment of ores or scrap
C22B 1/02
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
1Preliminary treatment of ores or scrap
02Roasting processes
C22B 7/02
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION AND REFINING OF METALS
7Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; ; Methods of a general interest or applied to the winning of more than two metals
02Working-up flue dust
Applicants
  • 贵州大学 GUIZHOU UNIVERSITY [CN]/[CN]
Inventors
  • 徐本军 XU, Benjun
  • 黄润 HUANG, Run
  • 黄彩娟 HUANG, Caijuan
  • 武庆慧 WU, Qinghui
  • 吕晓东 LV, Xiaodong
  • 伍秦至 WU, Qinzhi
Agents
  • 贵阳睿腾知识产权代理有限公司 GUIYANG RUITENG INTELLECTUAL PROPERTY AGENCY CO, LTD.
Priority Data
201811414834.126.11.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) METHOD FOR CONCENTRATING IRON BY COMPREHENSIVELY UTILIZING STEELMAKING DUST
(FR) PROCÉDÉ DE CONCENTRATION DE FER PAR UTILISATION COMPLÈTE DE POUSSIÈRE DE FABRICATION D'ACIER
(ZH) 一种综合利用炼钢粉尘富集铁的方法
Abstract
(EN)
A method for concentrating iron by comprehensively utilizing steelmaking dust: steelmaking dust is mixed with a reducing agent, an additive and water, is pressed into balls which are dried and then baked in vacuum, and a volatile substance and solid residue are collected. The volatile substance is elemental zinc in the gas phase, which is fed into a condensation collector and then condensed into a solid; the solid residue is broken and ball-milled, then pickled to remove impurities in a residual iron phase to obtain iron concentrate. Processing parameters are controlled, while the recovery rates of iron and zinc are increased.
(FR)
La présente invention concerne un procédé de concentration de fer par utilisation complète de poussière de fabrication d'acier : la poussière de fabrication d'acier est mélangée avec un agent réducteur, un additif et de l'eau, est pressée en billes qui sont séchées puis cuites sous vide, et une substance volatile et un résidu solide sont collectés. La substance volatile est du zinc élémentaire en phase gazeuse, qui est introduite dans un collecteur de condensation et ensuite condensée en un solide ; le résidu solide est cassé et broyé avec des boulets, puis décapé pour éliminer les impuretés dans une phase de fer résiduel pour obtenir un concentré de fer. Les paramètres de traitement sont contrôlés, tandis que les taux de récupération du fer et du zinc sont augmentés.
(ZH)
一种综合利用炼钢粉尘富集铁的方法,将炼钢粉尘与还原剂、添加剂和水混合,压制成球团,干燥处理后进行真空焙烧,收集挥发物和固体残留物。挥发物为气态单质锌,送入冷凝收集器后冷凝成固体;固体残留物经破碎、球磨后进行酸洗处理,除去残留铁相中的杂质,得到铁精矿。控制工艺参数,同时提高铁和锌的回收率。
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